Greg Marsh Enterprises

When it absolutely must be done right and with integrity, you need Greg Marsh Enterprises. Our motto, promise, mission, and ethic is: Satisfaction Guaranteed!

Home

Motorcycle Home

Triumph Home

Export Home

Norton Info Home

Special Parts
Updated 04/03/24

Master Switch Bracket
Updated 10/06/24

Norton Projects Blog
Updated 08/31/24

Customer Combat
Partial Rebuild July 24

Updated 12/17/24

Combat 5
Updated 06/04/24

Roadster 850
Updated 09/21/24

850 Commando
Recommission

Delivered 09/20/24

Customer Combat
Build Oct 23

Shipped 7/13/24

1975 Norton Wiring
Delivered 06/07/24

Blue 69S
Delivered 05/17/24

High Mileage 850
Delivered 03/26/24

Mk3 Engine & Gearbox
Delivered 03/07/23

1973 Customer
BasketCase Build

Delivered 07/15/22

1974 Norton 850
Commando Rebuild

Sold 01/12/21
Updated 06/10/21


Customer Combat
Delivered 09/07/20

1974 Norton Wiring
Completed 07/27/20

1972 Norton 750
Commando Rebuild

Completed 05/15/19
First Place Norton 05/16/19
Sold 01/01/20


1972 Norton Wiring
Completed 07/19/18

Customer Combat
and 69S Builds

Closed 10/18/23

US FlagSaturday, December 21, 2024

October 4, 2024, the last few Commandos I've worked on had issues with the mounting of the master switch. Often, the issue is that stock air filter was removed, and with it, the mounting point for this component. In each case, they had a cobbled together solution that was far from ideal.

I set out to resolve this issue with a bracket that would securely mount the master switch in various locations and orientations. I designed the bracket and sent the design to a CNC shop to have 10 prototypes made. They came out perfectly, but cost me quite a bit each. The first three pictures show the brackets from various angles. The next four pictures show some optional mounting locations. Since this is a customer bike I'm working on and one that needs the bracket, I am not drilling any mounting holes for these pictures, just using a clamp to show how the bracket could be installed:
  • The first is the simplest. It just screws to the battery tray where the rear plate of the "hamcan" air filter would mount. This could be more towards the center of the bike if desired using other mounting holes in the bracket. This is probably the least useful mounting location as it will not work for MK3 or others with the cNw e-start. It would also have the wiring in a weird location. The other options do work with the MK3 or cNw equipped bikes.
  • The second is much better. The wiring would be much more natural, and the switch is tucked in close to the frame tube. It is lower than standard and requires drilling two holes in the front of the battery box. Again, it could be located closer to the center of the bike if desired.
  • The third shows the switch higher which is closer to standard. Again, the wring would be a little exposed and again the bracket can be shortened to move it even a little higher and towards the center of the bike.
  • The fourth is my favorite as long as you have a reasonable sized battery. In this one you drill two holes in the bottom of the battery box and shorten the bracket if desired. It is shown full length.
There are several other mounting methods possible, and the bracket could be bent to add even more.

These brackets are made from 1008/1018 Cold Roll Steel, 0.093" thick in New Jersey, USA. As shown, they are how they arrived today. The edges are sharp, and they have some surface rust and minor tooling marks. If sand blasted the sharpness goes away along with the surface rust. When I use them, I will powder coat them black.

If there is enough interest, I will have a production run made which will make them inexpensive.

If you have any questions, call or write.


Norton Commando Master Switch Bracket - 1 Norton Commando Master Switch Bracket - 2 Norton Commando Master Switch Bracket - 3 Norton Commando Master Switch Bracket Mounting option 1 Norton Commando Master Switch Bracket Mounting option 2 Norton Commando Master Switch Bracket Mounting option 3 Norton Commando Master Switch Bracket Mounting option 4





Burlen, the parent of the AMAL Carb Company    The AMAL Carb Company     Tri-Spark, inovative electrical products for the Vintage British Motorcycle     Wassell, the 70+ year old suppliers of British Motorcycle parts     cNw has become a leader in bringing new parts and improvements to the Norton motorcycle market.
Copyright © 2003-2024 Greg Marsh Enterprises
8116 Arlington Blvd. #171, Falls Church, VA 22042
(703) 200-4025 marshg@gregmarsh.com